US6441227B1 - Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons - Google Patents

Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons Download PDF

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Publication number
US6441227B1
US6441227B1 US09/602,784 US60278400A US6441227B1 US 6441227 B1 US6441227 B1 US 6441227B1 US 60278400 A US60278400 A US 60278400A US 6441227 B1 US6441227 B1 US 6441227B1
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stage
oxygen
process according
volume
amount
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US09/602,784
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Khalid Karim
Yajnavalkya Subrai Bhat
Asad Ahmad Khan
Syed Irshad Zaheer
Abdullah Bin Nafisa
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Saudi Basic Industries Corp
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Saudi Basic Industries Corp
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Assigned to SAUDI BASIC INDUSTRIES CORPORATION reassignment SAUDI BASIC INDUSTRIES CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BHAT, YAJNAVALKYA SUBRAI, KARIM, KHALID, KHAN, ASAD AHMAD, NAFISA, ABDULLAH BIN, ZAHEER, SYED IRSHAD
Priority to US09/602,784 priority Critical patent/US6441227B1/en
Priority to PCT/EP2001/006534 priority patent/WO2001098247A2/en
Priority to KR10-2002-7017552A priority patent/KR100539573B1/ko
Priority to DE60127254T priority patent/DE60127254T2/de
Priority to EP01957833A priority patent/EP1292559B1/en
Priority to JP2002504203A priority patent/JP4680473B2/ja
Priority to AT01957833T priority patent/ATE356791T1/de
Priority to ES01957833T priority patent/ES2282277T3/es
Priority to GCP20011428 priority patent/GC0000289A/en
Priority to TW090115267A priority patent/TWI228503B/zh
Priority to US10/217,522 priority patent/US20020198406A1/en
Publication of US6441227B1 publication Critical patent/US6441227B1/en
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C07C51/252—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein

Definitions

  • This invention relates to a two-stage process for the production of alpha-beta carboxylic acids through catalytic vapor-phase oxidation of olefins by molecular oxygen using mixed metal oxide catalysts having the formulas
  • X 1 Co, Ni, V, Pt and/or Rh
  • X 2 Al, Ga, Ge, Mn, Nb, Zn, Ag, P and/or Si
  • X 3 K, Mg, Rb, Ca, Sr, Ba and/or Na
  • the exothermic nature (exothermicity) or ⁇ T of the oxidation reaction can be
  • 5,218,146 describes a process for the production of acrylic acid by a two-stage catalytic vapor-phase oxidation of propylene with molecular oxygen: the first stage oxidizes propylene to produce mainly acrolein and the second stage oxidizes acrolein to produce mainly acrylic acid.
  • the invention relates to a process for the production of carboxylic acids using a two-stage catalytic vapor-phase oxidation of olefins.
  • the invention also includes a new catalyst for the first stage of the process.
  • the process comprises:
  • a feedstream comprising olefins, oxygen, steam and inert gas
  • oxygen can also be introduced into the product stream intermediate between the first and second stages or at multistages within the same reaction zone or reactor.
  • the second stage product is a mixed reaction gas which contains off-gas and carboxylic acid product.
  • Off-gas obtained by separating carboxylic acid from the second stage mixed reaction gas product can be recycled to the first stage.
  • steam can also be present in the second stage mixed reaction gas product. Steam obtained by separating the carboxylic acid product from the mixed reaction gas product can be supplied to the first stage.
  • the olefins are, for example, ethylene, propylene, or iso- or n-butylenes; and the aldehydes are, for example, acetaldehyde, acrolein and methacrolein, producing corresponding carboxylic acids.
  • olefins are oxidized to produce an intermediate product stream containing alpha-beta unsaturated aldehydes using catalyst A having a composition according to the formula
  • X 1 one or more of Co, Ni, V, Pt, Rh;
  • X 2 one or more of Al, Ga, Ge, Mn, Nb, Zn, Ag, P, Si, W;
  • X 3 at least one or more of K, Mg, Rb, Ca, Sr, Ba, Na;
  • O oxygen (which satisfies the valences of the other elements);
  • a, b, c, d, e, f, g, and z are as defined below.
  • alpha-beta unsaturated aldehydes in the intermediate product stream are oxidized to produce mainly alpha-beta unsaturated carboxylic acid using catalyst B having a composition according to the formula
  • Y at least one or more of Pd, Sb, Ca, P, Ga, Ge, Si, Mg, Nb, K;
  • O is oxygen which satisfies the valences of the other elements
  • a 1 ,b 1 ,c 1 ,d 1 ,e 1 and z 1 are as defined below.
  • the invention relates to a process for the production of alpha-beta carboxylic acids, such as acrylic acid or methacrylic acid, by the catalytic vapor-phase oxidation of olefins, such as propylene or isobutylene. More particularly, the invention relates to a process for highly efficient production of acrylic acid or methacrylic acid through the use of a feed gas having a particular composition.
  • a feed gas having a particular composition In the production of acrylic acid by a two-stage catalytic vapor-phase oxidation of propylene with molecular oxygen, a first stage oxidizes propylene to produce mainly acrolein and the second stage oxidizes acrolein to produce mainly acrylic acid.
  • a gas mixture is supplied to the first stage.
  • the gas mixture preferably contains unsaturated aliphatic hydrocarbon of about C1 to C5, most preferably propylene or isobutylene, in an amount from about 3% to about 90%; oxygen in an amount from about 2% to about 50%; steam in an amount from about 5% to about 50% by volume; and 5% to 80% inert gas or gas with high specific heat such as nitrogen, argon, propane, carbon dioxide.
  • Additional oxygen in an amount from about 2% to 50% can be added at an intermediate stage of the process or at multiple stages in the reaction zone, in order to control the total oxidation reaction and to achieve a long catalyst life and high productivity of the acrylic acid.
  • the part of the amount of oxygen added at an intermediate stage or multistage is preferably from about 2% to about 15% by volume.
  • a catalytic process according to the present invention shows improvement in the catalyst performance and/or good catalyst stability. While it is not intended to be bound by theory, it is believed that these improvements can be attributed to low ⁇ T of the reaction and introduction of oxygen at multi- or intermediate stages of the reaction zones to control the extent of exotherm and keep. the reaction mixture out of explosive regimes or explosive ranges. Moreover, catalysts provided to carry out the reactions are relatively active at lower temperature than temperatures described in the prior art.
  • FIG. 1 is a schematic diagram illustrating the process of the invention.
  • a content of olefin e.g., propylene or isobutylene
  • a content of oxygen air, molecular oxygen, or mixture thereof
  • a content of carbon dioxide is in the range of 3% to 50% by volume, preferably 5% to 40% by volume, with a total content of hydrocarbon and carbon dioxide in the range of 20% to 80% by volume, preferably 30% to 70% by volume
  • a content of steam is in the range of 3% to 50% by volume, preferably 5% to 40% by volume.
  • the molecular oxygen is supplied as a molecular oxygen-containing gas having purity of at least 95% by volume.
  • recycle gas obtained by separating carboxylic acid, e.g., acrylic acid, from the mixed reaction gas produced by the second-stage reaction can be fed to the first-stage reaction, which can have a large thermal effect as well in controlling the ⁇ T of the reaction.
  • the steam to be supplied to the first-stage reaction is the steam contained in the recycle gas obtained by separating acrylic acid from the mixed reaction gas produced by the second-stage reaction. Build up gases may be purged.
  • reaction in the first-stage is carried out in the presence of an oxide catalyst A (CAT-A), as more fully described in U.S. patent application Ser. No. 09/560989
  • reaction in the second-stage is carried out in the presence of an oxide catalyst B (CAT-B), as more fully described in U.S. patent application Ser. No. 09/560988.
  • CA-A oxide catalyst A
  • CAT-B oxide catalyst B
  • CAT-A is mixed metal oxide catalyst in a composition having a formula
  • X 1 at least one or more of Co, Ni, V, Pt, Rh
  • X 2 at least one or more of Al, Ga, Ge, Mn, Nb, Zn, Ag, P, Si, W
  • X 3 at least one or more of K, Mg, Rb, Ca, Sr, Ba, Na, In
  • z is a number which satisfies the valences of the other elements in the formula.
  • CAT- B is mixed metal oxides in a composition having the formula
  • Y at least one or more of Pd, Sb, Ca, P, Ga, Ge, Si, Mg, Nb, K
  • O oxygen
  • a 1 is 1,
  • b 1 is 0.01 to 0.9
  • z 1 is a number which satisfies the valences of the other elements in the formula.
  • Catalysts A and B can used over supports in the form of shapes, or in fluidizable form.
  • Suitable supports for the catalyst include alumina, silica, titania, zirconia, zeolites, silicon carbide, Mo carbide, molecular sieves and other microporous or nonporous materials, and mixtures thereof.
  • Support material can be pretreated with acids such as HCl, HNO 3 , H 2 SO 4 , peracids or heteropoly acids and alkali base materials.
  • the supported catalyst When used on a support, the supported catalyst usually comprises from about 5% to 90% by weight of the catalyst composition, with the remainder being the support material.
  • Heat of the reaction for oxidation process is related to the concentration of the oxygen or extent of oxidation reaction, which ultimately affects reaction product selectivity.
  • concentration of the oxygen or extent of oxidation reaction which ultimately affects reaction product selectivity.
  • addition of oxygen at intermediate level maintains the yield, while having a positive impact on the amount of heat generated and removed out of the reaction zone. This results in an optimum rate of partial oxygenation or total oxidation, depending on the type of the catalyst.
  • propane, carbon dioxide and other gases with higher specific heat capacity can also be used to remove heat of the reaction in order to eliminate the possibility of explosion.
  • Steam in an adequate amount as a co-feed is used to promote the de-sorption of the main products of the catalytic vapor-phase oxidation of propylene, i.e., acrolein and acrylic acid. The presence of the steam with recycle gases such as carbon dioxide also increases the rate of oxygenation.
  • the first stage of the reaction is performed preferably in the range of 250° C. to 450° C., more preferably 270° C. to 390° C., at a contact time between the reaction mixture and the catalyst preferably from about 0.01 second to 100 seconds, more preferably from 0.1 second to 10 seconds; and a space hourly velocity preferably from about 50 to about 50,000 h ⁇ 1 , more preferably from about 100 to 10,000 h ⁇ 1 .
  • Reaction product shows a conversion of olefins in the range of preferably not less than 90 mol %, more preferably not less than 97 mol %.
  • the reaction temperature is preferably in the range of 180° C.
  • the two-stage operation shows a per pass reaction product yield of preferably not less than 85 mol %, more preferably not less than 88 mol %.
  • FIG. 1 is a schematic representation of the two-stage process for the production of carboxylic acid according to an embodiment of the invention.
  • POR can represent a Propylene Oxidation Reactor
  • AOR can represent an Acrolein Oxidation Reactor
  • ACE can represent Acrolein
  • ACA can represent Acrylic Acid.
  • a feed comprising olefin 1 (e.g., propylene) (also steam and inert diluent, e.g., N 2 , CO 2 ) and oxygen 2 is fed into oxidation reactor 3 (POR) which contains a first stage catalyst 4 (CAT-A) that converts olefin-containing (e.g., propylene) feedstock with oxygen into aldehyde, (e.g., acrolein), water and carbon dioxide.
  • olefin 1 e.g., propylene
  • POR oxidation reactor 3
  • CAT-A first stage catalyst 4
  • the effluent 5 of POR reactor 1 comprising aldehyde (e.g., ACA), (also unoxidized olefin, e.g., C 3 H 6 ; CO 2 , N 2 and H 2 O), is fed via optional heat exchanger 8 to second stage (AOR) reactor 6 containing catalyst 7 (CAT-B).
  • Heat exchanger 8 allows adjustment of the temperature of the feed to second stage reactor 6 .
  • the two catalysts CAT-A and CAT-B can be in one reactor in the form of a physical mixture or in alternating layer form (not shown).
  • oxygen in line 9 is added to second stage reactor 6 , depending upon the process conditions, for the oxidation of aldehyde to carboxylic acid (e.g., acrolein to acrylic acid). Also, by using an appropriate reactor configuration, oxygen can be added via a multi injection system reactor, e.g., where one of the reactants (oxidant) is introduced and controlled through microporous or mesoporous materials or through a configuration of holes placed at regular or random intervals in the reactor (not shown).
  • the inert gas streams 12 comprising CO 2 and N 2 from gas/liquid separation unit 11 are cycled through carbon dioxide removal unit 13 and the stream 14 from the carbon dioxide removal unit 13 is recycled through lines 20 and 22 to the feedstream 1 to the first stage reactor 3 .
  • the gas streams 12 can also be recycled to first stage reactor 3 without the carbon dioxide absorption (not shown), as the catalyst 4 (CAT-A) in reactor 3 is not affected by the presence of carbon dioxide.
  • Co-feed of carbon dioxide can also help in controlling the extent of exothermic heat of the reaction.
  • Liquid stream 15 from separator unit 11 is fed to distillation unit 16 where carboxylic acid (e.g., acrylic acid) 17 is separated from water 18 , and water 18 can be recycled back to first stage reactor unit 3 via lines 19 , 20 and 22 .
  • Gases and water in streams 14 and 19 can be combined into stream 20 and partially purged in purge unit 21 to control the build-up of gases before being conveyed to first stage reactor unit 3 .
  • Outlet gas of the second (II) stage reactor was conveyed to a condenser where acrylic acid was collected in the form of aqueous solution using water containing polymerization inhibitor, hydroquinone.
  • the product showed almost complete conversion of propylene with a 90% yield to acrylic acid. Overall ⁇ 4 ⁇ T of the reaction was observed. Reaction was continued over a period of 8000 hours without any sign of deactivation of catalysts.

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  • Engineering & Computer Science (AREA)
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  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
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US09/602,784 2000-06-23 2000-06-23 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons Expired - Lifetime US6441227B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US09/602,784 US6441227B1 (en) 2000-06-23 2000-06-23 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons
AT01957833T ATE356791T1 (de) 2000-06-23 2001-06-08 Zweistufiges verfahren zur herstellung von ungesättigten carbonsäuren durch oxidation von niederen, ungesättigten carbonsäuren
KR10-2002-7017552A KR100539573B1 (ko) 2000-06-23 2001-06-08 저 불포화 탄화수소의 산화에 의한 불포화 카르복실산의두단계 제조방법
DE60127254T DE60127254T2 (de) 2000-06-23 2001-06-08 Zweistufiges verfahren zur herstellung von ungesättigten carbonsäuren durch oxidation von niederen, ungesättigten carbonsäuren
EP01957833A EP1292559B1 (en) 2000-06-23 2001-06-08 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons
JP2002504203A JP4680473B2 (ja) 2000-06-23 2001-06-08 低級不飽和炭化水素の酸化による不飽和カルボン酸の生成のための二段階プロセス
PCT/EP2001/006534 WO2001098247A2 (en) 2000-06-23 2001-06-08 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hycrocarbons
ES01957833T ES2282277T3 (es) 2000-06-23 2001-06-08 Proceso en dos etapas para la produccion de acidos carboxilicos insaturados por oxidacion de hidrocarburos insaturados inferiores.
GCP20011428 GC0000289A (en) 2000-06-23 2001-06-16 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons
TW090115267A TWI228503B (en) 2000-06-23 2001-06-22 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons
US10/217,522 US20020198406A1 (en) 2000-06-23 2002-08-12 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons

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US10/217,522 Abandoned US20020198406A1 (en) 2000-06-23 2002-08-12 Two stage process for the production of unsaturated carboxylic acids by oxidation of lower unsaturated hydrocarbons

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EP (1) EP1292559B1 (enrdf_load_stackoverflow)
JP (1) JP4680473B2 (enrdf_load_stackoverflow)
KR (1) KR100539573B1 (enrdf_load_stackoverflow)
AT (1) ATE356791T1 (enrdf_load_stackoverflow)
DE (1) DE60127254T2 (enrdf_load_stackoverflow)
ES (1) ES2282277T3 (enrdf_load_stackoverflow)
GC (1) GC0000289A (enrdf_load_stackoverflow)
TW (1) TWI228503B (enrdf_load_stackoverflow)
WO (1) WO2001098247A2 (enrdf_load_stackoverflow)

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US6620973B2 (en) * 2000-04-28 2003-09-16 Saudi Basic Industries Corporation Catalysts for oxidation of lower olefins to unsaturated aldehydes, methods of making and using the same
US20040181085A1 (en) * 2001-04-25 2004-09-16 Bogan Leonard Edward Recalcined catalyst
US20040220434A1 (en) * 2003-05-02 2004-11-04 Brophy John H. Process for converting a hydrocarbon to an oxygenate or a nitrile
US20050137422A1 (en) * 2003-12-19 2005-06-23 Saudi Basic Industries Corporation Process for producing an unsaturated carboxylic acid from an alkane
US20060265788A1 (en) * 2004-09-08 2006-11-23 J.R. Simplot Company Plant-specific genetic elements and transfer cassettes for plant transformation
CN100439313C (zh) * 2006-10-27 2008-12-03 清华大学 一种丙烯氧化制备丙烯酸的多级流化床反应器及制备方法
US20090287019A1 (en) * 2003-12-19 2009-11-19 Saudi Basic Industries Corporation Process for producing an unsaturated carboxylic acid from an alkane
US20100099936A1 (en) * 2008-10-17 2010-04-22 Chae-Ho Shin Complex oxide catalyst of bi/mo/fe for the oxidative dehydrogenation of 1-butene to 1,3-butadiene and process thereof
EP2463024A1 (en) 2003-05-16 2012-06-13 Velocys Inc. Microchannel with internal fin support for catalyst or sorption medium

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US7553986B2 (en) 2003-12-23 2009-06-30 Rohm And Haas Company Process for the selective (amm)oxidation of lower molecular weight alkanes and alkenes
DE102004008573A1 (de) * 2004-02-19 2005-09-08 Stockhausen Gmbh Ein Verfahren zur Entfernung kohlenstoffhaltiger Rückstände in einem Reaktor
TWI522092B (zh) * 2005-02-28 2016-02-21 贏創德固賽有限責任公司 丙烯酸和基於可再生原料之吸水聚合物結構及二者之製備方法
DE102006039205A1 (de) * 2006-08-22 2008-03-20 Stockhausen Gmbh Auf nachwachsenden Rohstoffen basierende Acrylsäure und wasserabsorbierende Polymergebilde sowie Verfahren zu deren Herstellung mittels Dehydratisierung
DE102008038273A1 (de) 2008-08-18 2010-03-04 Evonik Stockhausen Gmbh Ein Verfahren zur Herstellung von Acrylsäure und daraus herstellbaren Verbindungen basierend auf Glycerin mit Wechselkatalysator
JP5280239B2 (ja) * 2009-02-09 2013-09-04 三菱レイヨン株式会社 パラジウム含有触媒、その製造方法、およびα，β−不飽和カルボン酸の製造方法
FR2976293B1 (fr) * 2011-06-10 2015-01-02 Arkema France Procede de synthese de composes hydrocarbones bi-fonctionnels a partir de biomasse
KR102319012B1 (ko) * 2018-11-13 2021-10-29 한화토탈 주식회사 포화탄화수소를 포함한 이소부텐을 이용한 메틸메타크릴레이트의 제조방법

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US20080031788A1 (en) * 2003-05-02 2008-02-07 Brophy John H Process for converting a hydrocarbon to an oxygenate or a nitrile
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EP1292559B1 (en) 2007-03-14
KR20030031006A (ko) 2003-04-18
GC0000289A (en) 2006-11-01
US20020198406A1 (en) 2002-12-26
JP4680473B2 (ja) 2011-05-11
DE60127254D1 (de) 2007-04-26
ES2282277T3 (es) 2007-10-16
EP1292559A2 (en) 2003-03-19
KR100539573B1 (ko) 2005-12-29
WO2001098247A2 (en) 2001-12-27
JP2004501127A (ja) 2004-01-15
ATE356791T1 (de) 2007-04-15
WO2001098247A3 (en) 2002-07-25
TWI228503B (en) 2005-03-01
DE60127254T2 (de) 2007-11-22

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